Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 83 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
2. 2.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 14 (b) 56 (c) not enough info (d) 49
3. 3.🧩 Meera is 10 years old. Ananya is older than Meera. How old is Ananya? (a) 12 (b) 15 (c) not enough info (d) 11
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
10. 10.🧩 Meera is 7 years old. Saanvi is older than Meera. How old is Saanvi? (a) 9 (b) 12 (c) not enough info (d) 8
11. 11.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Ananya is 7 years old. Nisha is 4 years older than Ananya. How old is Nisha? (a) 4 (b) 12 (c) 11 (d) not enough info
13. 13.🧩 Rohan is 8 years old. Vihaan is 2 years older than Rohan. How old is Vihaan? (a) 2 (b) 11 (c) not enough info (d) 10
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
15. 15.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the page number (d) the colour of ink
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
19. 19.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 56 (b) 14 (c) 49 (d) not enough info
20. 20.🧩 Tara is 10 years old. Ishaan is older than Tara. How old is Ishaan? (a) 12 (b) not enough info (c) 11 (d) 15
21. 21.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) yes, it is certain (d) no mango is sweet
22. 22.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
23. 23.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 80 (c) not enough info (d) 16
24. 24.🧩 Vihaan bought 4 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹200 (b) not enough info (c) ₹55 (d) ₹50
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Ishaan bought 3 kites and a bag for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹177 (b) ₹180 (c) ₹60 (d) not enough info
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Diya bought 3 balls and a water bottle for ₹205 in all. Each ball cost the same. What did one ball cost? (a) ₹68 (b) ₹205 (c) not enough info (d) ₹202
30. 30.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) not enough info (c) 42 (d) 13
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
33. 33.🧩 Kabir is 12 years old. Saanvi is older than Kabir. How old is Saanvi? (a) 13 (b) 14 (c) 17 (d) not enough info
34. 34.🧩 Vihaan is 6 years old. Rohan is 3 years older than Vihaan. How old is Rohan? (a) not enough info (b) 10 (c) 9 (d) 3
35. 35.🧩 Diya is 12 years old. Aarav is 6 years older than Diya. How old is Aarav? (a) not enough info (b) 6 (c) 18 (d) 19
36. 36.🧩 Aarav is 8 years old. Nisha is 3 years older than Aarav. How old is Nisha? (a) 12 (b) 3 (c) 11 (d) not enough info
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
38. 38.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
39. 39.🧩 Saanvi is 9 years old. Aarav is older than Saanvi. How old is Aarav? (a) not enough info (b) 11 (c) 10 (d) 14
40. 40.🧩 Ishaan is 6 years old. Arjun is older than Ishaan. How old is Arjun? (a) 11 (b) 7 (c) 8 (d) not enough info

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